<template>
  <div>
    123

    <!-- <button @click="btnClick">点击按钮</button> -->
    <button @click="btnClick(-1, $event)">点击按钮</button>
  </div>
</template>
<script>
export default {
  methods: {
    btnClick (num, e) {
      console.log(e)
    }
  }
}
</script>
<style></style>
>
